diff options
Diffstat (limited to 'vendor/github.com/pborman/uuid/time.go')
-rw-r--r-- | vendor/github.com/pborman/uuid/time.go | 87 |
1 files changed, 6 insertions, 81 deletions
diff --git a/vendor/github.com/pborman/uuid/time.go b/vendor/github.com/pborman/uuid/time.go index eedf2421..5c0960d8 100644 --- a/vendor/github.com/pborman/uuid/time.go +++ b/vendor/github.com/pborman/uuid/time.go @@ -6,65 +6,18 @@ package uuid import ( "encoding/binary" - "sync" - "time" + + guuid "github.com/google/uuid" ) // A Time represents a time as the number of 100's of nanoseconds since 15 Oct // 1582. -type Time int64 - -const ( - lillian = 2299160 // Julian day of 15 Oct 1582 - unix = 2440587 // Julian day of 1 Jan 1970 - epoch = unix - lillian // Days between epochs - g1582 = epoch * 86400 // seconds between epochs - g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs -) - -var ( - timeMu sync.Mutex - lasttime uint64 // last time we returned - clock_seq uint16 // clock sequence for this run - - timeNow = time.Now // for testing -) - -// UnixTime converts t the number of seconds and nanoseconds using the Unix -// epoch of 1 Jan 1970. -func (t Time) UnixTime() (sec, nsec int64) { - sec = int64(t - g1582ns100) - nsec = (sec % 10000000) * 100 - sec /= 10000000 - return sec, nsec -} +type Time = guuid.Time // GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and // clock sequence as well as adjusting the clock sequence as needed. An error // is returned if the current time cannot be determined. -func GetTime() (Time, uint16, error) { - defer timeMu.Unlock() - timeMu.Lock() - return getTime() -} - -func getTime() (Time, uint16, error) { - t := timeNow() - - // If we don't have a clock sequence already, set one. - if clock_seq == 0 { - setClockSequence(-1) - } - now := uint64(t.UnixNano()/100) + g1582ns100 - - // If time has gone backwards with this clock sequence then we - // increment the clock sequence - if now <= lasttime { - clock_seq = ((clock_seq + 1) & 0x3fff) | 0x8000 - } - lasttime = now - return Time(now), clock_seq, nil -} +func GetTime() (Time, uint16, error) { return guuid.GetTime() } // ClockSequence returns the current clock sequence, generating one if not // already set. The clock sequence is only used for Version 1 UUIDs. @@ -74,39 +27,11 @@ func getTime() (Time, uint16, error) { // clock sequence is generated the first time a clock sequence is requested by // ClockSequence, GetTime, or NewUUID. (section 4.2.1.1) sequence is generated // for -func ClockSequence() int { - defer timeMu.Unlock() - timeMu.Lock() - return clockSequence() -} - -func clockSequence() int { - if clock_seq == 0 { - setClockSequence(-1) - } - return int(clock_seq & 0x3fff) -} +func ClockSequence() int { return guuid.ClockSequence() } // SetClockSeq sets the clock sequence to the lower 14 bits of seq. Setting to // -1 causes a new sequence to be generated. -func SetClockSequence(seq int) { - defer timeMu.Unlock() - timeMu.Lock() - setClockSequence(seq) -} - -func setClockSequence(seq int) { - if seq == -1 { - var b [2]byte - randomBits(b[:]) // clock sequence - seq = int(b[0])<<8 | int(b[1]) - } - old_seq := clock_seq - clock_seq = uint16(seq&0x3fff) | 0x8000 // Set our variant - if old_seq != clock_seq { - lasttime = 0 - } -} +func SetClockSequence(seq int) { guuid.SetClockSequence(seq) } // Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in // uuid. It returns false if uuid is not valid. The time is only well defined |